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Narrow Positron Line Emission In Collisions Of Very Heavy Ions
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Book Synopsis International Conference on High Energy Physics/ International Union of Pure and Applied Physics, 24. 1988, München by : Rainer Kotthaus
Download or read book International Conference on High Energy Physics/ International Union of Pure and Applied Physics, 24. 1988, München written by Rainer Kotthaus and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 1634 pages. Available in PDF, EPUB and Kindle. Book excerpt: This was the most recent in a highly esteemed series of biannual Rochester conferences. 20 invited reviews and about 200 invited contributions on all aspects of current research in high energy and particle physics give a complete and lively account of achievements, activities and goals in the field. Topics discussed include results from proton-antiproton and electron-positron colliders, spectroscopy and decays of heavy flavors, weak mixing and CP violation, non-accelerator particle physics, heavy ion collisions, future accelerators, detector developments, the standard electroweak model and beyond, the status of perturbative QCD, superstrings and unification, new developments in field theory, non-perturbative methods, and cosmology and astrophysics.
Book Synopsis Heavy-ion Physics: Today And Tomorrow - Proceedings Of The 7th Adriatic International Conference On Nuclear Physics, 1991 by : Roman Caplar
Download or read book Heavy-ion Physics: Today And Tomorrow - Proceedings Of The 7th Adriatic International Conference On Nuclear Physics, 1991 written by Roman Caplar and published by World Scientific. This book was released on 1991-11-29 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Physics of Highly-Ionized Atoms by : Richard Marrus
Download or read book Physics of Highly-Ionized Atoms written by Richard Marrus and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: The progress in the physics of highly-ionized atoms since the last NATO sponsored ASI on this subject in 1982 has been enormous. New accelerator facilities capable of extending the range of highly-ionized ions to very high-Z have come on line or are about to be completed. We note particularly the GANIL accelerator in Caen, France, the Michigan State Superconducting Cyclotrons in East Lansing both of which are currently operating and the SIS Accelerator in Darmstadt, FRG which is scheduled to accelerate beam in late 1989. Progress i~ low-energy ion production has been equally dramatic. The Lawrence Livermore Lab EBIT device has produced neon-like gold and there has been continued improvement in ECR and EBIS sources. The scientific developments in this field have kept pace with the technical developments. New theoretical methods for evaluating relativistic and QED effects have made possible highly-precise calcula tions of energy levels in one-and two-electron ions at high-Z. The calculations are based on the MCDF method and the variational method and will be subject to rigorous experimental tests. On the experimental side, precision x-ray and UV measurements have probed the Lamb shift in the one and two electron ions up to Z=36 with increasing precision.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1994-11 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Treatise on Heavy Ion Science by : D.A. Bromley
Download or read book Treatise on Heavy Ion Science written by D.A. Bromley and published by Springer Science & Business Media. This book was released on 2012-11-27 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ERDA Energy Research Abstracts written by and published by . This book was released on 1989 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Physics of Strong Fields by : Walter Greiner
Download or read book Physics of Strong Fields written by Walter Greiner and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 996 pages. Available in PDF, EPUB and Kindle. Book excerpt: The NATO Advanced Study Institute on Physios of St~ong Fields was held at Maratea/Italy from 1-14 June, 1986. The school was devoted to the advances, theoretical and experimental, in physics of strong fields made during the past five years. The topic of the first week was almost exclusively quantum electrodynamics, with dis cussions of symmetry breaking in the ground state, of the physics of strong fields in heavy ion collisions and of precision tests of perturba tive quantum electrodynamics. The famous positron lines found at GSI (Darmstadt) and the related question "new particle versus vacuum decay" - (yes or no or both) - constituted the center of experimental advances. This was followed in the second week by the presentation of a broad range of other areas where strong fields occur, reaching from nuclear physics over quantum chromodynamics to gravitation theory and astrophysics. We were fortunate to be able to calIon a body of lecturers who not only made considerable personal contributions to this research but who are also noted for their lecturing skills. Their enthusiasm and dedication for their work was readily transmitted to the students resulting in a very suc cessful school.
Book Synopsis Tests of Fundamental Laws in Physics by : Orrin Fackler
Download or read book Tests of Fundamental Laws in Physics written by Orrin Fackler and published by Atlantica Séguier Frontières. This book was released on 1989 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings Of Xxv Zakopane School On Physics - Volume 2: Selected Topics In Nuclear Structure by :
Download or read book Proceedings Of Xxv Zakopane School On Physics - Volume 2: Selected Topics In Nuclear Structure written by and published by World Scientific. This book was released on 1990-11-02 with total page 445 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vol. 2 will contain topics on the new discoveries in nuclear structure, nuclear reactions with heavy and light ions and investigation of few-body systems.
Book Synopsis Vacuum Structure in Intense Fields by : H.M. Fried
Download or read book Vacuum Structure in Intense Fields written by H.M. Fried and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Advanced Study Institute (ASI) brought together two distinct ·"schools of approach" to Quantum Electrodynamics (QED) in the presence of intense, external, electromagnetic fields, in an effort to lay a joint foundation for a needed theoretical explanation of the sharp e+ e- "resonances" observed in the scattering of very heavy IOns. These (GSI/Darmstadt) experiments, whose history, latest reconfirmations, and most recent data were presented in three opening sessions (Bokemeyer, Koenig), show a smooth background of positron (e+) production, as a function of e+ kinetic energy. Superimposed upon this background are four very sharp peaks, of narrow widths (~ 30 KeV) and of clear experimental significance ('" 5 standard deviations). Most ofthese peaks correspond to sharp, essentially back-to-back electron-positron emission in the ions' center of mass. Following the approach of "supercritical" potential theory (SPT), where the total ionic charge unit Z satisfies Z > 137, it has been possible to provide a detailed and apparently correct understanding of the smooth e+ e- background; a coherent description of different facets of this approach, emphasizing the nature of the charged, supercritical vacuum, was described by the authors responsible for the invention of SPT (Greiner, Muller, Rafelski). In addition, predictions for related phenomena were outlined by other lecturers using the SPT approach (Bawin, Soff, SsJrensen).
Book Synopsis New Horizons in Fundamental Physics by : Stefan Schramm
Download or read book New Horizons in Fundamental Physics written by Stefan Schramm and published by Springer. This book was released on 2016-11-11 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents the state-of-the-art in selected topics across modern nuclear physics, covering fields of central importance to research and illustrating their connection to many different areas of physics. It describes recent progress in the study of superheavy and exotic nuclei, which is pushing our knowledge to ever heavier elements and neutron-richer isotopes. Extending nuclear physics to systems that are many times denser than even the core of an atomic nucleus, one enters the realm of the physics of neutron stars and possibly quark stars, a topic that is intensively investigated with many ground-based and outer-space research missions as well as numerous theoretical works. By colliding two nuclei at very high ultra-relativistic energies one can create a fireball of extremely hot matter, reminiscent of the universe very shortly after the big bang, leading to a phase of melted hadrons and free quarks and gluons, the so-called quark-gluon plasma. These studies tie up with effects of crucial importance in other fields. During the collision of heavy ions, electric fields of extreme strength are produced, potentially destabilizing the vacuum of the atomic physics system, subsequently leading to the decay of the vacuum state and the emission of positrons. In neutron stars the ultra-dense matter might support extremely high magnetic fields, far beyond anything that can be produced in the laboratory, significantly affecting the stellar properties. At very high densities general relativity predicts the stellar collapse to a black hole. However, a number of current theoretical activities, modifying Einstein’s theory, point to possible alternative scenarios, where this collapse might be avoided. These and related topics are addressed in this book in a series of highly readable chapters. In addition, the book includes fundamental analyses of the practicalities involved in transiting to an electricity supply mainly based on renewable energies, investigating this scenario less from an engineering and more from a physics point of view. While the topics comprise a large scope of activities, the contributions also show an extensive overlap in the methodology and in the analytical and numerical tools involved in tackling these diverse research fields that are the forefront of modern science.
Book Synopsis Government Reports Annual Index: Keyword A-L by :
Download or read book Government Reports Annual Index: Keyword A-L written by and published by . This book was released on 1988 with total page 1016 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nuclear Physics: Present and Future by : Walter Greiner
Download or read book Nuclear Physics: Present and Future written by Walter Greiner and published by Springer. This book was released on 2014-09-17 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: State-of-the-art survey by leading experts in the field. Major foci are superheavy nuclei and neutron-rich exotic nuclei. In addition new developments in nuclear fission and nuclear cluster decay are shown. Finally developments in relativistic heavy ion collisions and the physics of supercritical fields are detailed.
Book Synopsis New and Exotic Phenomena by : Orrin Fackler
Download or read book New and Exotic Phenomena written by Orrin Fackler and published by Atlantica Séguier Frontières. This book was released on 1987 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Physics Division Annual Report by : Argonne National Laboratory. Physics Division
Download or read book Physics Division Annual Report written by Argonne National Laboratory. Physics Division and published by . This book was released on 1995 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government reports annual index by :
Download or read book Government reports annual index written by and published by . This book was released on 199? with total page 1010 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Quantum Electrodynamics of Strong Fields by : Walter Greiner
Download or read book Quantum Electrodynamics of Strong Fields written by Walter Greiner and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 605 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fundamental goal of physics is an understanding of the forces of nature in their simplest and most general terms. Yet there is much more involved than just a basic set of equations which eventually has to be solved when applied to specific problems. We have learned in recent years that the structure of the ground state of field theories (with which we are generally concerned) plays an equally funda mental role as the equations of motion themselves. Heisenberg was probably the first to recognize that the ground state, the vacuum, could acquire certain prop erties (quantum numbers) when he devised a theory of ferromagnetism. Since then, many more such examples are known in solid state physics, e. g. supercon ductivity, superfluidity, in fact all problems concerned with phase transitions of many-body systems, which are often summarized under the name synergetics. Inspired by the experimental observation that also fundamental symmetries, such as parity or chiral symmetry, may be violated in nature, it has become wide ly accepted that the same field theory may be based on different vacua. Practical ly all these different field phases have the status of more or less hypothetical models, not (yet) directly accessible to experiments. There is one magnificent ex ception and this is the change of the ground state (vacuum) of the electron-posi tron field in superstrong electric fields.
